Pottery drying stove



June 5, 1951 R. A. MADDOCK 2,556,096

POTTERY DRYING STOVE Filed Dec. 29, 1947 4 Sheets-Sheet l Inventorfiaasar 6'. Manon/r J1me 1951 R. A. MADDOCK 2,556,096

POTTERY DRYING STOVE Filed Dec. 29, 1947 4 Sheets-Sheet 2 F/GZ InventorRoss)? 7- n. M90000;

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June 5, 1951 MADDQCK 2,556,096

POTTERY DRYING STOVE Filed Dec. 29, 1947 4 Sheets-Sheet s F/G3. I d

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' POTTERY DRYING STOVE FiledDec. 29. 1947' 4 Sheets-Sheet 4 I [no nlor IFaber? WexaakfM Agent Patented June 1951 POTTERY DRYING STOVE RobertAlexander Maddock, Trcntham, England Application December 29 In GreatBritai 1947, Serial No. 794,382 I! April 13, 1945 Section 1, Public Law690, August 8, 1946 Patent expires April 13, 1965 4 Claims. 1

This invention relates to pottery drying stoves, and is chiefly althoughnot necessarily exclusively concerned with the drying of articles ofhollow ware such as cups.

, The invention is concerned with the type of stove often known as amangle, in which the articles to be dried are carried by moving shelvesor racks through the drying chamber; usually the mangle type of stove isa somewhat tall and narrow chamber having a vertically moving conveyorcarrying swinging trays or other suitable supports for the goods. Thegoods are loaded and unloaded through openings in the lower part of thestove and heat is introduced into the upper part of the stove. Theconveyor,

carries the goods up from the loading opening into the upper drying zoneof the stove and the dried goods are conveyed downwards past theunloading opening where they are removed. Sometimes a single openingserves for both loading and unloading.

The object of the invention is to facilitate the more efiective dryingof the ware in its travel through the stove.

A further object of the invention is to allow ware to be subjected tothe direct action of the drying medium during a greater part of itstravel through the stove, for example in its ascending or inward travel(away from the point of loading) and also in its descending or outwardtravel (back to the point of unloading).

A further object of the invention is to provide a stove in which theware can be more quickly and easily loaded and unloaded by the workers.

A further object is to facilitate the removal of the pieces of ware fromthe moulds without having to remove the moulds from the stove, so that,for example, pieces such as cups can be sponged and fitted with handleswhile the now empty moulds continue their travel in the stove back tothe point of loading, where they can be removed, re-filled and replacedto be dried again.

Other objects will become apparent from the ensuing description andclaims.

This invention consists in a pottery drying stove in which the goods arecarried through the stove by means of a swinging tray conveyor or otherequivalent moving carrier wherein supports for the goods are provided ofsuch a nature that the said goods are held in an inclined position, theheating or drying means being so arranged that the goods in their travelthrough the drying zone of the stove are subjected to the directimpingement of heat.

Referring to the drawings which form a part of this specification:

Figures 1, 2 and 3 are respectively a vertical sectional elevation, aside view, and a plan 01 a vertical mangle stove in which the dryingmedium is hot air.

Figures 4, 5 and 6 are further vertical sectional elevations showingalternative arrangements.

Referring to Figures 1, 2 and 3 a mangle is provided with a loadingopening in at one side and anunloading opening II at the opposite side,both near the bottom of the structure. A vertical swinging tray type ofconveyor I2 is arranged in the structure, ascending past the loadingopening it and descending past the urn loading opening ll. Each swingingtray is in the form of a V-section unit is adapted to receive moults E iand support them firmly in a position inclined at any suitable angle,say for example at about 45 to the vertical. In the stove above theopenings air blowing units I5, it are provided having nozzles or louvresIT or any other suitable provision whereby they direct hot air atsubstantially the same angle as that of the goods as indicated by thearrows, whereby the goods are subjected to di rect impingements of thehot air from the unit it during the initial or ascending portion oftheir travel and from the unit it during the return or downward portionof their travel. The air blowing units l5, 15 are connected by ductsliia, I 6a, with a duct it through which the hot air is blown by acirculating fan arranged at H3. The air is exhausted from the stovethrough the duct 2! leading to the other side of the fan 18 by way of aheater arranged at 2!. The conveyor I2 is driven by a chain drive 22from a reduction gear and motor 23, the driving sprocket 22 beingmounted on the same shaft 25 as the top sprockets 25 of the conveyor.

The air blowing units it, l6 may be replaced by radiant dryers or lamps15b, 16b, Figure 4, for infra-red drying. it

Where height is restricted the stove may have a horizontal drying zoneas shown in Figure 5, the conveyor I2 being guided from the vertical tothe horizontal direction of travel and supported during the latter byguides 27. The moulds I4 are supported by inclined shelves l3a insteadof by V-section units it of Figures 1-4. Figure 6 shows a similar stoveincorporating lamps I57), ltb as in Figure 4.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A pottery drying stove for articles of hollow ware comprising acasing having a loading opening and an unloading opening, a conveyormovably mounted within the casing, support devices swinging from saidconveyor, each of said support devices being so formed that when ahollow ware article is placed therein it will rest in an inclinedposition with' respectqto. the

conveyor with its open end facing upwardly and outwardly, heating meansarranged within the casing in close proximity to said conveyor, the

longitudinal axis of the heating means being H substantially parallel tothe axes of the hollow \vare articles so that the holloW-warearticles--- being dried are subjected to va -direct impinge ment ofheat from heating xneanslawhilei-x travelling in their inclinedposition, the, arrang s, ment being such that the articlescan,be'with-'" drawn from their moulds when they travel past theunloading opening, leaving the moulds still,

located in the supports. 7

2. A,. pottery- .drying stove for articles of. hol-i low ware comprisinga casing having. a loading;

openingand an unloading ropening, anendless conveyor: movable ,in thecasing, support devices swingably supported by said conveyor,

each-of, said support devices being so formed that when amarticleiofhollow ware is placed thereinit will rest in an inclined position withitsuopen. endfacing upwardly and outwardly, heatingimeans.disposedhwithin the casing in close proximity to the conveyor,thelongitudinal axis. of ithesheating ,means being substantiallyparalleltothe axes of the hollow ware rto-sub-. ject thahollow ware to:a direct impingement of heatduringumovement of the conveyor, and

additional heating means in said casing and so u disposed with respectto theconveyor as to subject the ohollowrware toidireet, impingement ofheatlafter passing ,the first mentioned heating 3.}A potterydrying-stove for-articles of hol- 10W. Ware comprising .a casing, aconveyor movable within said casing, support devices swingably,.,mounted'on said'conveyor and adapted to receive the pottery mouldand article, each of said support devices supporting the potteryarticle, with the open end facing upwardly and outwardly inan inclinedmanner, and means for discharging .heatedair directly into the.article-1,

thefllo'ngitudinal, axis of the means \fo-rgdischarg 4 ing the, heatedair being substantially parallel to the axes of the hollow ware"articles.

4. A pottery goods drying stove comprising a'chamber of tall narrowproportions, a travelling conveyor in said chamber, work supports onsaid conveyor, said work supports being adapted-"to--hold the -goods atan angle to the verticalirunlofu. thelconveyor, said chamber having',=at,=least-.-:one opening to allow for the loading and unloading ofgoods, at least one casing=-in'- the chamber arranged above saidopening,-said-casing being arranged and positioned s0,.as .to be inclose proximity to goods carried past it by said conveyor; nozzles onsaid casing facing towards said conveyor, theulongitudinal axis "ofthenozzles being substantially parallel to the axesiof the goods; meansfor supplying hot air to'said "casing whereby said nozzles will directthe hot, air .inwardly' towards the goods" carriedflby the conveyor,said conveyor being adapted to carry theygoods inclined outwardlytowards said nozzles.

ROBERT ALEXANDER MADDOCK'.

REFERENCES LCITED v The following"referencesare of record in the file--of" this" patent:

UNITED STATES PATENTS o

